This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 2 |
| 3 | 6 |
| 4 | 7 |
| 5 | 12 |
| 6 | 13 |
| 7 | 17 |
| 8 | 18 |
| 9 | 26 |
| 10 | 77 |
| 11 | 151 |
| 12 | 222 |
| 13 | 403 |
| 14 | 567 |
| 15 | 1107 |
| 16 | 7221 |
| 17 | 7722 |
| 18 | 8475 |
| 19 | 9729 |
| 20 | 17904 |
| 21 | 21404 |
| 22 | 30170 |
| 23 | 62523 |